The extra-low dispersion (ED) glass virtually eliminates chromatic aberration and color fringing to maximize color resolution and contrast. Brightness and clarity are further enhanced by the optimized light transmission of the anti-reflective optical coatings. The scope's 60x maximum magnification will bring distant vistas up close, but you can also focus as close as 35' away. The light-gathering power of the large 80mm objective lens assures performance even in low-light conditions.